Honeywell UDC2800 User Manual

Step Operation Press Result
is operating. When process completes,
tuning parameters are calculated and
the "T" will disappear and lower display
will show “TUNE OFF” prompt.
Table 5-11: Procedure for Using MANUAL TUNE for Cool side of Duplex Control
Step Operation Press Result
1 Configure LSP2 Lower Display key Until 2SP (Local Setpoint 2) shows in
the lower display.
2 Adjust LSP2
value
Increment key or
Decrement key
Until LSP2 is a value within the Cool
Zone (output below 50%).
3 Switch to
“Automatic”
Mode
Man Auto key Until “Auto” appears (on controllers
with Manual option).
4 Show Tuning
Prompt
Lower Display key Until “TUNE OFF” is shown in the lower
display.
5 Tuning in
operation
Increment key or
Decrement key
Select “SLOW” or “FAST” in the lower
display.
A “T” appears under SP in the middle
display as long as ACCUTUNE process
is operating. When process completes,
tuning parameters are calculated and
the "T" will disappear and lower display
will show “TUNE OFF” prompt.
Error Codes
Table 5-12: Procedure for Accessing Accutune Error Codes
Step Operation Press Result
1 Select
Accutune Set
Up Group
Setup key Enter in Accutune Set Up Group
2 Go to Error
Status
Prompt
Function key, and
Increment or
Decrement key
Enter in Error Status prompt
195
Chapter 5 - Monitoring and Operating the Controller

Honeywell UDC2800 Specifications

General

Control Modes	PID, ON/OFF, Manual
Mounting	Panel Mount
Display	Dual 4-digit LED
Input Types	Thermocouple, RTD, mA, mV, V
Output Types	Relay
Power Supply	100-240 VAC, 50/60 Hz
Communication	RS-485 Modbus RTU
Enclosure Rating	NEMA 4X